EP1388698B1 - Vanne électromagnétique de régulation de pression - Google Patents

Vanne électromagnétique de régulation de pression Download PDF

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Publication number
EP1388698B1
EP1388698B1 EP20030017147 EP03017147A EP1388698B1 EP 1388698 B1 EP1388698 B1 EP 1388698B1 EP 20030017147 EP20030017147 EP 20030017147 EP 03017147 A EP03017147 A EP 03017147A EP 1388698 B1 EP1388698 B1 EP 1388698B1
Authority
EP
European Patent Office
Prior art keywords
obturator
operating member
pressure
inlet
poppet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP20030017147
Other languages
German (de)
English (en)
Other versions
EP1388698A1 (fr
Inventor
David E. Herbert
Douglas E. Boddy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eaton Corp
Original Assignee
Eaton Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eaton Corp filed Critical Eaton Corp
Publication of EP1388698A1 publication Critical patent/EP1388698A1/fr
Application granted granted Critical
Publication of EP1388698B1 publication Critical patent/EP1388698B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0686—Braking, pressure equilibration, shock absorbing
    • F16K31/0693—Pressure equilibration of the armature
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
    • G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
    • G05D16/2024—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means the throttling means being a multiple-way valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87217—Motor

Definitions

  • the present invention relates to solenoid operated valves of the type having a supply or inlet port and a pressure control outlet port and an exhaust port through which fluid is discharged to a sump or pressure source return.
  • Such valves are employed to provide electrical control of a fluid pressure signal by controlling the flow of fluid from the inlet port to a valving chamber communicating with the pressure control port and also controlling the amount of fluid bleed to the exhaust for maintaining the desired pressure at the pressure signal outlet port.
  • Solenoid valves of the aforesaid type have found widespread usage in controlling the flow of hydraulic fluid in automatic transmissions for motor vehicles.
  • the shifting of the transmission speed ratios is controlled by an electronic controller providing an electrical signal to the solenoid operated valve which provides a fluid pressure signal to a pressure responsive actuator for effecting the transmission speed ratio change.
  • valves employed in automatic transmission shift control have utilized a ball valve member disposed in the valving chamber with the ball moved with respect to a valve seat by an operating rod connected to the solenoid armature for controlling flow from the supply port to the valving chamber.
  • valves of this type have encountered instability and flutter of the ball valve member upon exposure to hydraulic transients in the system and vibration encountered by the transmission.
  • Efforts to counteract such instability and valve flutter in solenoid operation transmission shift control valves have utilized stiffer bias springs acting against the ball valve. This results in greater force and increased power requirements for the solenoid. For applications requiring a plurality of shift control valves a prohibitively high power consumption for the valves is the result.
  • US-Patent no. 6,382,587 discloses a fluid control valve to control the air in a bypass line around a throttle valve in an internal combustion engine for an automotive to improve the idle performance. It comprises a valve housing in which there is a reciprocating shaft on which is mounted a valve body that is brought into and out of contact with respect to valve seat disposed within a fluid flow passage to permit or prevent fluid flow through the passage.
  • the valve includes a vibration retarding mechanism comprising a sleeve mounted on the shaft and a guide mounted to the housing with an axial opening sized to receive the sleeve. Slots and grooves cooperating with one another limit the radial movement of the shaft to retard or dampen reciprocation-induced vibrations. It therefore has long been desired to provide a simple and relatively low cost way or means of reducing or eliminating the flutter in a solenoid operated pressure control valve and particularly valves of the type employing solenoid operating off of low voltage power supply widely employed in motor vehicle applications.
  • the present invention as it is defined in independent claim 1 provides a solenoid operated pressure control valve having a supply inlet port valved by a raised surface on a pressure responsive member such as a diaphragm, which raised surface forms an obturator moveable with respect to a valve seat.
  • the obturator is contacted by an operating member extending through an exhaust port valve seat in the valving chamber and the operating member is operatively moved by the solenoid armature.
  • the pressure responsive member preferably in the form of an elastomeric diaphragm has the obturator preferably formed by a rigid insert in the central region of the diaphragm.
  • a bleed orifice provides limited flow across the pressure responsive member to provide viscous dampening of the movement of the obturator. Viscous dampening of the movement of the pressure responsive member and obturator render the valve substantially insensitive to instability and flutter when the valve supply port is subject to transients the valve body is subjected to vibration or the valve is in the nearly closed condition.
  • FIG. 1 is a cross-section of the valve assembly of the present invention
  • FIG. 2 is an enlarged view of the lower portion of the body of the assembly of FIG. 1;
  • FIG. 3 is an axonometric view of the pressure responsive member of the assembly of FIG. 1;
  • FIG. 4 is a view similar to FIG. 3 with a portion broken away showing the bleed orifice
  • FIG. 5 is a view similar to FIG. 1 of an alternate embodiment of the invention with the inlet valve normally open in the de-energized condition;
  • FIG. 6 is a view of the valve of FIG. 5 in the energized closed condition.
  • valve assembly of the present invention is indicated generally at 10 and includes a valve body 12 having a supply or inlet preferably comprising a plurality of circumferentially spaced ports 14 which communicate with a valving chamber 16 formed in the lower end of the body and which is closed by a closure member 18 attached to the body by any suitable expedient, as for example, press fit staking or weldment.
  • the valving chamber 16 communicates with a valving passage 20, the lower end of which defines a valve seat 22 and the upper end of passage 20 communicates with an enlarged diameter bore 24 which has pressure control outlet ports 26 communicating therewith.
  • the upper end of enlarged bore 24 communicates with an exhaust chamber 28 which has exhaust ports 30 formed therein for discharge to a sump or the source or supply return.
  • the pressure control outlet ports 26 are isolated from the exhaust ports 30 and the inlet supply ports 14 by a pair of resilient seal rings 32, 34 disposed in spaced relationship on opposite sides of the pressure control ports 26 in annular grooves 36, 38 formed in the outer surface of the body 12.
  • a pressure responsive member preferably in the form of an elastomeric diaphragm 40 is disposed in the valving chamber 16 and sealed and retained therein by closure member 18 contacting the undersurface of the periphery of the diaphragm 40.
  • the diaphragm 40 has a raised surface 42 on the upper side thereof and preferably centrally located, which surface 42 forms a moveable obturator for contacting inlet valve seat 22.
  • the obturator 42 is formed on a rigid insert 44 disposed in the central region of the diaphragm 40 and which has a small aperture or bleed orifice 46 formed therein.
  • the insert 44 may be formed of plastic or metal as required for withstanding the pressure forces to be encountered in its intended application.
  • a bias spring 48 is disposed in valving chamber 16 with the lower end thereof registered against the inside surface of closure 18 and the upper end thereof registered against the undersurface of the insert 44 for biasing the obturator 42 in a direction so as to contact and close against inlet valve seat 22 thereby forming a normally closed valve assembly.
  • a solenoid operator indicated generally at 50 has a coil bobbin 52 with coil 54 wound thereon received over a flux ring or collector 56 attached to the upper end of body 12, with the lower end of bobbin 52 received thereover and registered thereagainst.
  • An upper flux collector or ring 58 is partially received within the upper end of bobbin 52; and, the flux rings 56, 58 and bobbin 52 are retained on body 12 as an assembly by an outer casing 60 having radially inwardly extending end flanges 61, 63.
  • a moveable armature 62 is slidably disposed within the upper flux collector 58 and has the lower end thereof defining a working air gap with the upper end of the lower flux collector 56.
  • An operating member or rod 64 is received through armature 62 and secured thereto for movement therewith, with the upper end of rod 64 slidably received in a bearing 66; and, the rod 64 extends downwardly through sliding bearing 68 disposed in lower flux collector 56.
  • Rod 64 extends downwardly into exhaust chamber 28 and into enlarged bore 24.
  • the lower end of rod 64 has a reduced diameter pin portion 70 formed thereon which extends downwardly through valving passage 20 with the end thereof disposed for contacting obturator 42.
  • annular flange 72 which has the undersurface 73 thereof configured to act as a poppet for seating against an annular exhaust valving surface 74 formed at the upper end of the enlarged bore 24.
  • the normally closed valve 10 has the obturator 44 seated against valve seat 22 with the solenoid operator 50 de-energized; and, the pin 70 is in contact with the obturator 42 such that surface 73 of poppet 72 is raised from valve seat 74 permitting the pressure control outlet ports 26 to be open to the exhaust ports 30 and thus no pressure signal provided at ports 26.
  • the arrangement of flux ring 58 and 56 is such that lower flux ring 56 acts as a pole piece attracting the armature 62; and, armature 62 is moved downwardly by overcoming the bias force of spring 48 tending to close the air gap between the lower surface of armature 62 and the upper end of lower flux ring 56 such that pin 70 progressively moves obturator 42 away from seat 22 and moves poppet 72 closer to valve seat 74 reducing flow to the exhaust and thereby increasing the pressure to the pressure control outlet ports 26.
  • the undersurface 73 of poppet 72 contacts valving seating surface 74 and closes the exhaust ports 30 from the pressure control ports 26, obturator 42 is held away from seat 22 permitting full supply pressure to be applied to the signal control outlet port 26.
  • the bleed orifice 46 permits a small amount of flow therethrough from opposite sides of the diaphragm 40 as the diaphragm is moved. This viscous flow enables the diaphragm to absorb transients thereagainst as may enter the supply ports 14 and provides dampening of the movement of the obturator 42.
  • valve assembly 80 an alternate embodiment of the valve assembly of the present invention is indicated generally at 80 and is shown in FIG. 5 in the de-energized normally open condition; and, the assembly 80 is shown in FIG. 6 in the energized condition with the inlet closed.
  • the assembly 80 is similar to the assembly 10 of FIGS. 1 through 4 with the exception that the annular armature 82 with operating rod 84 received therethrough and secured for movement therewith has the upper end of a spring 86 registered against the upper bearing 88 with the lower end of the spring 86 registered against the upper end of armature 82 and biasing the armature and operating rod 84 in a downward direction.
  • the embodiment 80 of FIGS. 5 and 6 has the operating rod 84 provided with an annular valving surface 90 for closing against the exhaust valve seat 92 for controlling flow to the exhaust port 94.
  • the lower end of rod 84 has a pin 98 provided thereon for extending downwardly through passage 100 which has a valve seat 102 formed on the undersurface thereof against which is moved an obturator 104 for closing against valve seat 102.
  • the obturator is attached to a pressure responsive diaphragm 106 which is similar to the diaphragm 40 of FIGS. 3 and 4.
  • the obturator 104 thus controls flow between the supply pressure inlet ports 108 and the passage 100 which communicates with the control pressure signal outlet ports 94.
  • a relatively light or low rate spring 110 biases the obturator and diaphragm upwardly in a direction to maintain contact with the end of pin 98.
  • valve is shown with coil 112 energized wherein upper flux ring 114 acts as a pole piece attracting armature 82; and, armature 82 is moved upward overcoming the preload force of spring 86 and raises the valving surface 90 from valve seat 92 and allows flow from the pressure control ports 94 to the exhaust ports 93 and moves obturator 104 toward valve seat 102 to restrict flow from the inlet ports 108 through passage 100.
  • pin 98 is lifted sufficiently to allow obturator 104 to be biased against the valve seat 102 by spring 110 thereby closing flow from inlet 108 through passage 100.
  • pressure in pressure control ports 94 is bled through the exhaust ports 93 until there is no control signal outlet pressure.
  • a bleed orifice 107 is provided in diaphragm 106, similar to orifice 46 in diaphragm 40 of FIGS. 3 and 4; and, orifice 107 functions to provide viscous dampening of the movement of the obturator thereby minimizing inlet valve flutter.
  • the present invention thus provides a simple and low cost valve construction employing a pressure responsive diaphragm with a bleed orifice therethrough having the inlet valve obturator moveable therewith and thus the bleed orifice is operative to dampen movement of the obturator.

Claims (12)

  1. Vanne électromagnétique de régulation de pression comprenant :
    (a) un corps de vanne (12) comportant une cavité de distribution (16) ayant un orifice d'alimentation d'entrée (14), un orifice de régulation de pression (26) et un orifice d'échappement (30) formé sur le corps de vanne (12) pour évacuer vers un puisard ou la source ou le retour d'alimentation, ladite cavité ayant une partie de sa paroi munie d'une membrane souple (40) sensible à la pression qui est mobile par rapport à l'orifice d'entrée, ledit corps comprenant un volet (72) mobile par rapport audit orifice d'échappement (30) ;
    (b) un élément de manoeuvre (64) mobile avec ledit volet (72) comportant une partie (70) reçue à travers ledit orifice d'échappement et fonctionnelle pour assurer le déplacement de ladite membrane souple sensible à la pression (40) ; et
    (c) un électroaimant (50) associé audit corps ayant un induit (62) et fonctionnel par mise sous tension pour assurer le déplacement desdits élément de manoeuvre et volet afin de fermer et ouvrir ledit orifice d'échappement et mouvoir ladite membrane souple sensible à la pression pour fermer et ouvrir ledit orifice d'entrée, dans laquelle ladite membrane souple sensible à la pression comprend un orifice de purge (46) la traversant qui fait communiquer ledit orifice d'alimentation avec le côté opposé de ladite partie de ladite paroi et y permet un écoulement limité pour amortir son déplacement.
  2. Vanne selon la revendication 1, dans laquelle ladite membrane souple sensible à la pression comporte un obturateur (42) placé sur elle.
  3. Vanne selon la revendication 1, dans laquelle ladite membrane souple (40) comprend un matériau élastomère.
  4. Vanne selon la revendication 1, dans laquelle ledit obturateur (42) comprend une surface à soupape qui a une courbure sphérique ou conique.
  5. Vanne selon les revendications 2 et 3, dans laquelle ladite membrane élastomère comporte un obturateur (42) comprenant un élément rigide (44) y fixé contenant ledit orifice de purge (46) y formé.
  6. Vanne selon la revendication 1, dans laquelle ladite membrane souple sensible à la pression comprend un moyen (48) sollicitant l'obturateur dans une direction pour fermer ledit orifice d'entrée (14).
  7. Vanne selon la revendication 1, dans laquelle ladite partie dudit volet (72) comporte une surface annulaire (73) formée sur ledit élément de manoeuvre (64).
  8. Procédé d'amortissement d'une vanne de régulation de pression du type purge comprenant les étapes consistant à :
    (a) former un corps de vanne (12) comportant une chambre à action de soupape (16) communiquant avec une entrée de pression d'alimentation (14), une sortie de pression de régulation (26) et une sortie d'échappement (30) formée dans le corps de vanne (12) en vue de l'évacuation vers un puisard ou la source ou le retour d'alimentation ;
    (b) placer un volet (72) pour un mouvement de soupape par rapport à ladite sortie d'échappement (30) ;
    (c) brancher un élément de manoeuvre (64) au volet (72) et prolonger l'élément, par l'orifice de décharge, dans la chambre à action de soupape ;
    (d) placer une membrane souple (40) sensible à la pression dans ladite entrée de chambre à action de soupape (16) en plaçant une membrane souple (40) par-dessus ladite entrée d'alimentation et en plaçant un obturateur mobile avec elle et en fermant et ouvrant ladite entrée de pression d'alimentation à l'aide dudit obturateur ;
    (e) placer un électroaimant (50) sur ledit corps et brancher l'induit (62) de celui-ci afin d'assurer le mouvement desdits volet et élément de manoeuvre par mise sous tension de l'électroaimant ; et,
    (f) mettre ledit obturateur en contact avec ledit élément de manoeuvre et mouvoir ledit obturateur en réponse au mouvement dudit élément de manoeuvre ; et,
    (g) former un orifice de purge (46) dans ladite membrane souple sensible à la pression et amortir le mouvement dudit obturateur par un débit à travers l'orifice de purge.
  9. Procédé selon la revendication 8, dans lequel ladite étape consistant à placer une membrane souple sensible à la pression comporte l'opération consistant à solliciter ladite membrane pour fermer ladite entrée de pression d'alimentation.
  10. Procédé selon la revendication 8, dans lequel ladite étape consistant à placer une membrane souple sensible à la pression comprend l'étape consistant à placer une membrane élastomère (40) et ladite étape consistant à placer un obturateur comprend l'étape consistant à former une partie surélevée sur ladite membrane.
  11. Procédé selon la revendication 8, dans lequel ladite étape consistant à brancher un élément de manoeuvre au volet (72) comporte l'étape consistant à former le volet intégralement avec ledit élément de manoeuvre (64).
  12. Procédé selon la revendication 8, dans lequel ladite étape consistant à mettre ledit obturateur en contact avec ledit élément de manoeuvre comporte l'étape consistant à prolonger ledit élément de manoeuvre (64) à travers ladite entrée de pression d'alimentation (14).
EP20030017147 2002-08-08 2003-07-29 Vanne électromagnétique de régulation de pression Expired - Fee Related EP1388698B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US215074 2002-08-08
US10/215,074 US6810909B2 (en) 2002-08-08 2002-08-08 Solenoid operated pressure control valve

Publications (2)

Publication Number Publication Date
EP1388698A1 EP1388698A1 (fr) 2004-02-11
EP1388698B1 true EP1388698B1 (fr) 2006-08-23

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EP20030017147 Expired - Fee Related EP1388698B1 (fr) 2002-08-08 2003-07-29 Vanne électromagnétique de régulation de pression

Country Status (7)

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US (1) US6810909B2 (fr)
EP (1) EP1388698B1 (fr)
JP (1) JP2004069069A (fr)
KR (1) KR20040014329A (fr)
CA (1) CA2436314C (fr)
DE (1) DE60307747T2 (fr)
ES (1) ES2269882T3 (fr)

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US7331564B2 (en) * 2005-04-22 2008-02-19 Delphi Technologies, Inc. Normally open high flow hydraulic pressure control actuator
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JP2008045486A (ja) * 2006-08-16 2008-02-28 Yanmar Co Ltd 蓄圧式燃料噴射装置
US7766040B2 (en) * 2007-03-13 2010-08-03 Eaton Corporation Pressure control valve assembly
US20090166274A1 (en) * 2007-05-24 2009-07-02 Eaton Corporation Engine valve with a combined engine oil filter and valve actuator solenoid
US20100264348A1 (en) * 2009-04-20 2010-10-21 Food Global Technologies LLC Dynamic Bore Plug Assembly
US8443839B2 (en) * 2009-10-20 2013-05-21 Eaton Corporation Fluid-biased hydraulic control valve with armature piston
EP2400193B1 (fr) * 2010-06-23 2019-08-28 Asco Numatics GmbH Dispositif destiné à la régulation du débit d'un milieu liquide ou gazeux
US9010373B2 (en) 2010-09-09 2015-04-21 Mac Valves, Inc. Pressure balanced valve with diaphragm valve member end seal
KR101123016B1 (ko) * 2011-05-11 2012-03-16 주식회사 유니크 압력 제어 밸브
DE102013211035A1 (de) * 2013-06-13 2014-12-18 Continental Teves Ag & Co. Ohg Elektromagnetventil
DE102015101588A1 (de) * 2015-02-04 2016-08-04 Kendrion (Villingen) Gmbh Sitzventil
JP6593102B2 (ja) * 2015-10-28 2019-10-23 浜名湖電装株式会社 電磁弁
US10364136B2 (en) * 2016-09-26 2019-07-30 Gate Cfv Solutions, Inc. Valve device
CN112747155B (zh) * 2020-12-25 2022-04-01 江苏盛伟燃气科技有限公司 一种用于燃气调压器的指挥器
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Also Published As

Publication number Publication date
CA2436314C (fr) 2008-09-30
US20040025948A1 (en) 2004-02-12
JP2004069069A (ja) 2004-03-04
ES2269882T3 (es) 2007-04-01
US6810909B2 (en) 2004-11-02
CA2436314A1 (fr) 2004-02-08
KR20040014329A (ko) 2004-02-14
DE60307747D1 (de) 2006-10-05
EP1388698A1 (fr) 2004-02-11
DE60307747T2 (de) 2007-08-16

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